Pregnancy & RA

I have been living with RA for 5 years.  I've been on several dosages and types of steriods/medications to manage it.  Luckily, I have been able to keep it under control for the last 2 years and haven't had to resort to steriods (though there were times when I wanted to).  My husband and I are beginning to think about starting a family but I am very scared as to how my body will react.  My doctor told me that it can go either way when you are pregnancy-could be worse, could be better.  Before I was diagnosed with RA, they thought I had Lupus (which you can never be truly diagnosed with).  What kind of effects could the steriods/medications have on a pregnancy/baby??